Method of manufacturing folded body of airbag

Abstract

A method of manufacturing a folded body of an airbag, which is inflated by allowing an inflation gas, including: an inflow opening through which the inflation gas is allowed to flow; and an attachment portion of the circumferential edge of the inflow opening, the airbag being formed as a folded body having a folded shape of being gathered to an upper side of the attachment portion, the attachment portion being attached to an attachment seat of a storage portion, the method includes: folding the airbag, in the state of raising a temperature of the airbag, to form a pre-folded body; heating and compressing the pre-folded body, and cooling and compressing the pre-folded body, which is heated and compressed, to form the folded body.

What is claimed is: 
     
         1 . A method of manufacturing a folded body of an airbag, which is inflated by allowing an inflation gas, including: an inflow opening through which the inflation gas is allowed to flow; and an attachment portion of the circumferential edge of the inflow opening, the airbag being formed as a folded body having a folded shape of being gathered to an upper side of the attachment portion, the attachment portion being attached to an attachment seat of a storage portion, the method comprising:
 folding the airbag, in the state of raising a temperature of the airbag, to form a pre-folded body;   heating and compressing the pre-folded body, and   cooling and compressing the pre-folded body, which is heated and compressed, to form the folded body.